What's the best Android app for singing karaoke with people from around the world?

Smule is a comprehensive karaoke app that allows users to sing along to thousands of songs, record their performances, and engage with a worldwide community of music lovers. It excels in providing a social singing experience, particularly for those seeking to collaborate with strangers or friends across different countries. Key features include a duet mode that supports real-time and asynchronous singing, an extensive catalog of tracks updated regularly, and tools like vocal effects and pitch correction to enhance recordings. Users often employ Smule for virtual parties, solo practice, or to gain feedback from peers, making it useful for both casual entertainment and skill development. Reviews indicate that the app's global reach and interactive elements are highly appreciated, with many noting how it fosters connections through music. However, some limitations exist, such as in-app purchases required for premium songs and occasional ads that can disrupt the flow. Performance may also vary on older Android models, leading to minor sync issues during recordings. Despite these points, Smule remains a strong option for its blend of functionality and community engagement.